We also compare our result with several localized FRBs [1]}, [2]}, [3]}, [4]} in Figure REF . The blue line is our result derived from TNG300 and the blue shade region is the 95% confidence region. The theoretical one from equation (REF ) is shown as dash line for the cosmological parameters from Planck [5]}. The \(DM_{\rm host}\)  value is adopted from [6]}. Based on the host galaxy observations, [6]} calculated the \(DM_{\rm host}\)  of repeating and non-repeating FRBs from the IllustrisTNG simulation. They found \(DM_{\rm host}=32.97(1+z)^{0.84}\)  pc cm\(^{-3}\)  for non-repeating FRBs. For FRB 190608 we adopt its \(DM_{\rm host}=137\pm 43\)  pc cm\(^{-3}\)  from observations [8]}. The \(DM_{\rm MW}\)  value is derived with the NE2001 model [9]}. We take \(DM_{\rm halo}=50\)  pc cm\(^{-3}\)  for all FRBs. The contributions from FRB sources are ignored. All the derived \(DM_{\rm IGM}\)  are compatible with our result.
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